There have been 260 valid popes in Catholic history, and more than 40 antipopes (i.e., men who posed as popes but had not been truly elected). There have been more than 200 papal vacancies (periods without a pope). The facts available on this website prove that the last five men who have claimed be popes – Anti-Pope Francis, Benedict XVI, John Paul II, John Paul I, Paul VI and John XXIII, the men who brought in Vatican II – have been and are antipopes. We prove that they are/were manifest heretics and not true Catholics. This section defends Catholic teaching and the teaching of the true popes; it exposes manifestly heretical antipopes, for example Anti-Pope Francis, who have been falsely posing as leaders of the Catholic Church.

Pope Paul IV solemnly declares that a heretic cannot be validly elected pope, even with the unanimous consent of the cardinals

Responses to 19 of the Most Common Objections Against Sedevacantism[PDF file] – Sedevacantism is the position that the Chair of Peter is presently vacant… This section proves that what is said on this website is perfectly compatible with all Catholic teachings, papal dogmas, the indefectibility of the Catholic Church, the indefectibility of the papal office, Christ’s promises to be with His Church, etc.

St. Robert Bellarmine, De Romano Pontifice, II, 30: “A pope who is a manifest heretic automatically (per se) ceases to be pope and head, just as he ceases automatically to be a Christian and a member of the Church. Wherefore, he can be judged and punished by the Church. This is the teaching of all the ancient Fathers who teach that manifest heretics immediately lose all jurisdiction.”

St. Francis De Sales (17th century), Doctor of the Church, The Catholic Controversy, pp. 305-306 : “Now when he [the Pope] is explicitly a heretic, he falls ipso facto from his dignity and out of the Church…”

St. Antoninus (1459): “In the case in which the pope would become a heretic, he would find himself, by that fact alone and without any other sentence, separated from the Church. A head separated from a body cannot, as long as it remains separated, be head of the same body from which it was cut off. A pope who would be separated from the Church by heresy, therefore, would by that very fact itself cease to be head of the Church. He could not be a heretic and remain pope, because, since he is outside of the Church, he cannot possess the keys of the Church.” (Summa Theologica, cited in Actes de Vatican I. V. Frond pub.)